[grvrjr]

i was going through the accel web site and came accross an opti-spark for the LT1. i thought MSD only made after market optisparks for the LT1s?

 

[HVYSS]

They came out about the same time the MSD did. They get mixed results as does the MSD . Still a safe bet to go with the GM opti when needing to replace one. Just remember to locktite the rotor to prevent problems down the road.

 

[wytltng]

I got one on "Wytltng". Been running for two years minus winter storage. Have had no problems. Reason I went used this compared to Delco was it was cheaper. I also use the ignition control box, coil, & module as well.

 

[marko1968]

Optispark

Check this company out found them on ebay look good they have excellent feedback also advertise on the ls1 forum http://chandlermotorsports.com/1104032-10457702-distributor-cap-rotor-optispark.html